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May 14, 2026 is the Proposers Day event date (registration deadline was May 4, 2026). This is a Special Notice for a Proposers Day, not the final BAA submission deadline. The stored deadline of 2026-05-14 matches the Proposers Day date.
Expeditionary Power- and Energy-Dense Implementations (ExPEDitions) program (DARPA-SN-26-70) is sponsored by Defense Advanced Research Projects Agency (DARPA). DARPA's ExPEDitions program focuses on developing transformative electrically rechargeable batteries and fuel cells capable of achieving both high energy density and high-power density for defense and expeditionary applications.
While primarily focused on electrochemical storage, the program's aim to leapfrog existing energy storage limitations and impact broader applications could be relevant for highly innovative mechanical energy storage concepts with significant density improvements.
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Department of War organization. Expeditionary Power- and Energy-Dense Implementations From grain for horses to JP-8 fuel for jets, energy has long been the fundamental currency of the battlespace. ExPEDitions is a DARPA effort to leapfrog operational energy limitations, demonstrating a new chemistry for electrically rechargeable batteries and fuel cells able to achieve both high energy and power density.
Balancing energy and power “Energy” is like the size of your bank account; “power” is how fast you can spend it. A sensor array and a vertical-takeoff-and-land drone might have similar total energy needs, but one spends the energy over months, the other in minutes or hours.
The advent of affordable lithium-ion batteries has provided ubiquitous portable power at unprecedented energy densities, but hydrocarbon fuel power systems outstrip these energy densities by a factor of 10. ExPEDitions looks to match fuel energy density but in a battery form factor that will enable electrical rechargeability and complete independence from fuel supply lines in hotly contested environments.
Achieving high energy, stability, endurance ExPEDitions is building on a promising rechargeable carbon-air system developed in the DARPA ExCURSion program (Expeditionary Carbon Utilization for Energy Resilience and Stabilization).
ExCURSion’s novel chemistry shows high specific energy and high stability, making it a favorable system-level alternative to hydrocarbons for endurance missions and commercial applications alike (e.g. drones with hundreds of additional miles of range; electric vehicles that don’t risk bursting into flame).
In its first 18 months, ExPEDitions aims to create a battery solution ready for testing in real-world devices (e.g. drones, heavy machinery, etc.) to create a pathway for near-term adoption and maturation in commercial markets.
Overcoming power density limitations In ExPEDitions’ second 18-month phase – in addition to moving the initial battery solutions towards integration into real world devices – ExPEDitions will focus on using recent advancements in oxygen electrochemistry (or other novel approaches) to at least triple the peak specific power of the batteries, opening up new approaches to frontline capabilities.
Combining high energy and power density in a rechargeable solution could dramatically simplify battlespace logistics, particularly for contested environments. It could also help rapidly accelerate the commercial innovation and adoption around new energy solutions for an almost unlimited array of real-world applications. Executive Conference Center Registration deadline: May 4, 2026 Published: April 27, 2026
According to the current listing, eligibility includes: Small businesses, educational institutions, and other non-traditional performers are encouraged to participate. The program aims to broaden DARPA's reach and break down barriers of entry for new performers. Confirm the full requirements in the official notice before applying.
The published deadline was October 27, 2025, which has passed. Check the official notice for any future application windows before investing time in a proposal.
Expeditionary Power- and Energy-Dense Implementations (ExPEDitions) program (DARPA-SN-26-70) is funded by Defense Advanced Research Projects Agency (DARPA). Verify program details on the funder's official page before applying.
Yes — this listing is flagged as national in scope, so applicants across the U.S. may apply, subject to the sponsor's other eligibility criteria.
Applications go through the funder's official portal — the Apply Now link on this page goes there directly.
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